- Bef 1167(Notes: You may have to scroll down or right to see chart.)
| Arthur I, Duke of Brittany | |
| B: | 29 Mar 1187 |
| Nantes, Loire-Atlantique, Pays de la Loire, France | |
| D: | Abt 3 Apr 1203 |
| Rouen, Seine-Maritime, Haute-Normandie, France | |
| Eleanor | |
| B: | Bef 1186 |
| D: | 10 Aug 1241 |
| Constance of Bretagne, Duchess of Brittany | |
| B: | 12 Jun 1166 |
| Bretagne, France | |
| D: | 31 Aug 1201 |
| Nantes, Loire-Atlantique, Pays de la Loire, France | |
| Geoffrey II, Duke of Brittany, Earl of Richmond, Prince of England | |
| B: | 23 Sep 1158 |
| London?, England | |
| D: | 19 Aug 1186 |
| Paris, Île-de-France, France | |
| Sir Ranulf de Blunderville, Earl of Chester | |
| B: | Abt 1170 |
| Oswestry, Shropshire, England | |
| D: | 28 Oct 1232 |
| Wallingford, Berkshire, England | |
| Alice de Thouars | |
| D: | 21 Oct 1221 |
| Piers'Mauclerc' de Braine, Earl of Richmond | |
| B: | Abt 1188 |
| D: | Abt 28 May 1250 |
| at sea? | |
| Guy de Thouars, Regent of Brittany | |
| D: | Aft 1213 |
| Conon IV(le Petit), Duke of Brittany | |
| D: | 20 Feb 1171 |
| Margaret of Scotland de Huntingdon | |
| B: | 1154 |
| Northumberland, England | |
| D: | 1201 |
| Geffrey de Rohan, Viscount Rohan | |
| D: | 1221 |
| Alain IV de Rohan | |
| D: | 1205 |
| Constance | |
| D: | Aft 23 Jun 1184 |
| Alan III de Rohan, Viscount Rohan | |
| D: | Abt 1195 |
| Bertha de Bretagne | |
| D: | Bef 1167 |
| Alan IIIthe Black, Earl of Richmond | |
| B: | Bef 1100 |
| D: | 15 Sep 1146 |
| Bretagne, France | |
| Jehanne de Fougères | |
| D: | 1269 |
| Hugue XII de Lusignan, Count of La Marche | |
| D: | Aft 25 Aug 1270 |
| Tunis, Tunisia | |
| Raoul de Fougères, Seigneur de Fougéres | |
| D: | 24 Feb 1257 |
| Isabelle de Craon | |
| D: | Aft 15 Jan 1275 |
| Geoffrey de Fougères | |
| D: | 1212 |
| Eudes de Porhoet, Vicomte de Porhoet | |
| D: | 1170 |
